Hydraulic pressure control unit

A hydraulic pressure control unit (5) of a brake system (10) for a straddle-type vehicle (100), the hydraulic pressure control unit comprising:

• a hydraulic pressure control mechanism (51) that includes:
• a base body (51a);
• and a component incorporated in the base body (51a) to control a brake hydraulic pressure generated in the straddle-type vehicle (100);
• a controller (52) that includes a brake control section (52a) that controls operation of the component;
• and
• a case (53) that is held by the base body (51a) in a state of accommodating the brake control section (52a), wherein
• the controller (52) includes a power control section (52b) that controls operation of a power generator for the straddle-type vehicle (100), and the power control section (52b) is accommodated together with the brake control section (52a) in the case (53).